Paul Scott wrote: > Greetings, > > I started asking about this recently from a slightly different point of > view. > > My desktop computer is not always easily accessible. I often access it from > my laptop through dyndns.org. > > I can ping my desktop from my laptop with its dyndns.org address. The > address is maintained by ddclient. > > From several months ago ssh to that same address times out. (This worked for > years before that.) > > I don't know how to diagnose this.
dyndns and similar services map a domain name to an IP address when they get a notification from your desktop (or whereever the dyndns client is running) that the IP address has changed. If you are trying to ssh in during a time between when the IP address has changed and when the client notifies dyndns, it will fail. The first questions, then: what machine is notifying dyndns? what software is it using for that? how does it detect a new IP address? how often does it run?
